This disambiguation page lists articles associated with the title UPD. If an internal link led you here, you may wish to change the link to point directly to the intended article.
Chronic smokers often have difficulty breathing because they develop Chronic Obstructive Pulmonary Disorder, or COPD. The two diseases that fall under that category are emphys â¦ ema and chronic bronchitis.
Smokers may for their part have to deal with chronic bronchitis.(2) Characterized by a persistent, wet cough, it is along with emphysema the main type of Chronic Obstructive Pulmonary Disease, or COPD, that affects those that regularly inhale nicotine products.